Air-pump.



No. 748,498.` PATENTED DEG. 29, 1903., M. E. HARMSTEAD.

AIR PUMP.

APPLICATION FILED 00T. 29,1901. N0 1" 2 SHEETS-SHEET 1.

f b pq. -uma f n. i 'HnJHIhih'm in@ PATENTED DEG. 29, 1903.

M. E. HARMSTBAD.

- AIR PUMP.

APPLICATION FILED 00T. 29, 1901.

.2 SHEETS-SHEET 2.

N0 MODEL.

NITED STATES Patented December 29, 1903.

PATENT OFFICE.

MARTIN E. HARMSTEAD, OF BURLINGTON, NEW JERSEY, ASSIGNOR OF ONE-HALF TO JOSEPH J. SLEEPER, OF PHILADELPHIA, PENN- SYLVANIA.

AIR-PUMP.

SPECIFICATION forming part of Letters Patent No. 748,498, dated December 29, 1903.

i Application iled October 29, 1901. Serial NOSOAOS. (No model.)

To a, whom it may concern,.-

Beit known that I, MARTIN E. HAEMsTEAD, a citizen of the United States, residing at Burlington, in the county of Burlington, State of New Jersey, have invented a new and useful Improvement in Air-Pumps, of which the following is a specification.

My invention relates to an improvement in an apparatus for generating gas; and it consists of means for forcing air through a suitable receptacle containing a suitable duid which is adapted to charge the air with gas, which latter can be conducted off to a point of consumption.

It further consists of novel'details of construction, as will be hereinafter set forth.

Figure l represents a partial elevation and partial vertical sectional view of an apparatus embodying my invention. Fig. 2 represents a horizontal section of the tank containing the gas fluid. Fig. 3 represents a view, partly in side elevation and partly in section, showing the drum employed, the shaft thereof also being shown in cross-section. Fig. 4 represents a vertical sectional view and partial elevation of a portion of the device, showing the ports. Fig. 5 represents an elevation of the portion of the device shown in Fig. 4.

Figs. 6 and 7 represent sectional views of a portion of the device, showing the ports in diierent positions. Fig. 8 represents a rear view of the plate in which the ports are situated. Figs. 9 and lOreprese'nt views of a modified form of valves employed. i

Similar letters of reference indicate corresponding parts in the figures.

Referring to the drawings, A designates the drum, which consists of the two concentric horizontal cylindrical bodies a a', whose ends are connected by annular plates a2 n.3, as shown, which latter form the side plates of the drum. From the cylinders and the annular space inclosed between them a segment is cut away,and the annular space thus exposed is closedby the end plates B, connecting the circumferences of the cylinders and extending between the side plates of the drum. In the central opening is disposed a nozzle C, through Which the iiuid or liquidin the present case Water-is supplied to the interior of the drum through means hereinafter described.

D designates spokes one end of each of which is connected with the inner cylinder a. of said drum and the other end to the heads E and F, which latter are mounted upon the pipe or shaft G, a portion of which is hollow, as seen in Fig.l l, one end of said shaft being suitably supported and journaled in the upright or support H and the opposite end being supported by the standard P, said pipe having an opening J therein, which communicates with a passage U' in the head F, as seen in Fig. 7.

K designates a plate connectedwith a sleeve V', which is suitably supported on the pipe G, said plate having a slot L therein, in which is adapted to move the pin M, which is secured to the head F, the end lwalls of said slot engaging with the pin M to give proper movement to the drum A, as will be further described.

T designates a gear mounted on said sleeve V', between which latter and the standard P `is a spring N, which holds the plate K against C' and D' designate pipes which are connected With the head F and which form a communication therebetween and the interior of the drum A when the plate K is in proper position therefor,one of said pipes leading into one end of said drum and the other into the other end.

E' designates a stuffing-box which commu- Suitable springs L' serve to guide and hold the upper portion H' of the device, a suitablev valve M' controlling the discharge end of said pipe F'.

N' designates a pipe leading fromthe interior of the upper portion I-I' of the regulating device and discharges into a tank P', which may be of any preferred form of construction, although in the present instance I have shown what I consider1 a very efficient meansy for this purpose and which has a series of vertical partitions Q' therein, which are alternately open at opposite ends, and between each partition is a series of pieces of felt or other suitable absorbent material R', which extend from topto bottom of the tank and dip into hydrocarbon or other suitable fluid S'. A discharge-pipe T' leads from said tank to a suitable source of consumption.

The operation is as follows: Any suitable means for imparting motion to the crankarm may be employed, it only being necessary to rock said arm in order to give an oscillatory motion to said tank A, which latter is first filled with a suitable fluid or liquid. When now the tankA is rocked in the direction indicated by the arrow, Fig. 3, it will be seen that the fluid will flow toward the end with which the pipe D' communicates. The tank A is rocked by motion being imparted to the gear S and to the gear T, which turns the sleeve V', and with it the plate K, so that the passage A registers with the opening in the pipe D and with one of the passages U in the head F, forming a communication between the interior of the drum A and the interior of the shaft G, as seen in Fig. 7, and the port V registers with the opening in the pipe C'. One of the said walls of the slot L engages with the pin M, and as the movement continues the tank is moved so that the fluid flows toward the end with which the pipe D' communicates and forces the air therethrough into the passage U' and thence into the passage in the shaft G, air meanwhile being drawn in through the port V into the pipe C and is discharged into the end of the drum A with which said pipe communicates. When now the parts are oscillated in the opposite direction, the plate K is moved to the reverse position, so that the port U communicates with the pipe D', (see Fig. 6,) and the passage B communicates with the pipe C' and with the other passage U'. (See Fig. 5.) The other end wall of the slot L engages with the pin M, and as the movement continues the drum A is rocked in the opposite direction and the air is forced through the pipe O and the passage U into the shaft G, while air is taken in through D' and forced into the drum A. The air from the pipe G will be forced through the stuffing-box E and the pipe F' into the upper portion H' of the regulating device. From thence it will pass through the pipe N' into the tank P' and be forced through the absorbent material R', the course of which is indicated by the arrow, Fig. 2,

and will be charged with gas from the fluid S' and can be conducted off from the pipe T' to the point of consumption.

It will be seen that I have placed the valve M' at the end of the pipe F' to prevent sucking back of the air from the upper portion of the regulating device, which is made of such size that as the Adrum reverses in its motion flickering of the gas will be prevented. I may also construct the parts in such a manner that when the consumption of the gas ceases the machinery will automatically stop and as soon as the gasis turned on the machinery will automatically start.

In Figs., 9 and 10 I have shown a dierent form of valve employed to provide for the charging and discharging of the air from the drum A, the operation of the parts being similar to that already described, excepting that instead of employing a plate K, I place passages A2 and B2 in the axis G, which communicate, respectively, with the pipes D' and C', a passage O2 communicates with the bore of the said axis G, and around the latter I place a collar or sleeve D2, which has the ports E2 and F2, which by the proper movement of the said sleeve or collar communicate with the said passages A2 and B2, respectively, in order that air may be taken in therethrough and forced into either end of the drum A. A recess G2 is also provided on the interior of the sleeve D2, which is incommunication with the passage O2 and with either one of the passages A2 or B2, depending upon the position of the sleeve D2,whereby it will be seen that a communication is established between the bore of the axis G and either of the passages A2 and B2, whereby the air from either side of the tank A can be forced into the bore of the axis G and from thence to the required point, it being understood, as above stated, that the operation is similar to that already described. It will also be understood that the collar D2, with its ports, is to be substituted for the plate K and the head F and is mounted upon the axis G, the sleeve V' and other parts being modified accordingly. This sleeve D2 may be turned in any suitable manner, as by hand.

It will be evident that various changes may be made by those skilled in the art which will come within the scope of my invention, and I do not, therefore, desire to be limited in every instance to the exact construction herein shown and described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a device of the character described, a drum, a hollow axis therefor, a fluid partly filling the drum air-inlets, pipes comm unicating with the interior of the drum upon opposite sides of said fluid, and means concentric with said shaft for forming communication alternately between one or the other of said pipes and the interior of said hollow shaft as the drum is oscillated in opposite directions IOO IIO

IZO

whereby the direction of liow of the air is automatically controlled and reversed.

2. In a device of the character described, a drum, a hollow shaft supporting the same, means for rocking said drum, a fluid partly lling said drum, a pipe communicating with the interior of saiddrum on one side of said fluid, a second pipe communicating with the interior ofsaid drum on the opposite side of said fluid, and means embracing said shaft for forming a communication alternately between one or the other of said pipes and the interior of said shaft, said means coperating with the rocking means and controlled thereby.

3. In a device of the character described, a drum having a segment thereof removed, a iuid partly iilling the same, a hollow axis for said drum, pipes communicating with the interior of said drum on opposite sides of said iiuid, ports controlled by the rocking means for said drum and adapted to be operated to alternately com municatewith said pipes forming an intake therefor, and passages adapted to alternately communicate with said pipes for conducting air therefrom, and means embracing said hollow axis for governing the How through said passages.

4. In a device of the character described, aV i drum having a segmental portion removed, means for rocking the same, a fluid partly filling the same, pipes communicating with the interior of said drum on opposite sides of said fluid, means operatively connected with and controlled by said rocking means to charge or discharge air into and from the interior of said drum, a shaft supporting said drum having a passage therethrough, means for alternately forming a communication between said pipes and the interior of said shaft, and means for conducting air from said shaft `to a suitable place.

5. In a device of the character described, a drum having a segmental portion thereof removed, a hollow axis for said drum, heads supporting said axis, means for rocking said drum, a rotatable sleeve operatively connected with the rocking means, inlets and outlets for the drum connected with the hollow axis and controlled by the rotation of said sleeve, a regulating device into which the discharge-pipe extends, and a valve on the discharge-pipe within said regulating device.

MARTIN E. HAR-MSTEAD.

A Witnesses:

JOHN A. WIEDERSHEIM, 0.1). MCVAY. 

